Benkert, Marc, Nöllenburg, Martin, Uno, Takeaki, Wolff, Alexander. Minimizing Intra-Edge Crossings in Wiring Diagrams and Public Transportation Maps. Graph Drawing (GD'06) (Kaufmann, M. and Wagner, D.), volume 4372 of LNCS, pages 270-281, 2007, Springer-Verlag.